NI SCXI-1600 data acquisition module

16 bit data acquisition module block used for SCXI - SCXI ‑ 1600 is a for SCXI analog input, analog output, digital I/O and switch mold piece of the whole function of data acquisition and control mold piece. SCXI ‑ 1600 can be installed in the SCXI machine box, machine box for all of the die block provide external calibration digital trigger, clock and connection. Using SCXI ‑ 1600, can convert any SCXI machine box to plug-in data acquisition system.

Stack Manipulation

It is possible to manipulate the subroutine stack by using the ZS command. Every time a JS instruction, interrupt or automatic routine (such as #POSERR or #LIMSWI) is executed, the subroutine stack is incremented by 1. Normally the stack is restored with an EN instruction. Occasionally it is desirable not to return back to the program line where the subroutine or interrupt was called. The ZS1 command clears 1 level of the stack. This allows the program sequencer to continue to the next line. The ZS0 command resets the stack to its initial value. For example, if a limit occurs and the #LIMSWI  routine is executed, it is often desirable to restart the program sequence instead of returning to the location where the limit occurred. To do this, give a ZS command at the end of the #LIMSWI routine.

Auto-Start Routine

 The DMC-21x2/21x3 has a special label for automatic program execution. A program which has been saved into the controller’s non-volatile memory can be automatically executed upon power up or reset by beginning the program with the label #AUTO. The program must be saved into non-volatile memory using the command, BP Often it is desirable to monitor certain conditions continuously without tying up the host or DMC21x2/21x3 program sequences. The DMC-21x2/21x3 can monitor several important conditions in the background. These conditions include checking for the occurrence of a limit switch, a defined input, position error, or a command error.

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